#337AB2#337AB2

#337AB2 is a mid, moderate cyan. Relative luminance 0.178; OKLCH L 56.1% C 0.112 H 245.6°. Best body text is #FFFFFF at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#337AB2
RGB	rgb(51, 122, 178)
HSL	hsl(206, 55%, 45%)
HSV	hsv(206, 71%, 70%)
CMYK	cmyk(71.3%, 31.5%, 0%, 30.2%)
CIE-LAB	lab(49.30, -3.33, -36.05)
CIE-LCH	lch(49.30, 36.21, 264.73°)
OKLab	oklab(56.08% -0.0462 -0.1021)
OKLCH	oklch(56.08% 0.112 245.6)
XYZ	xyz(16.3576, 17.8354, 44.6913)
Luminance	0.1784 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337AB2 #B26B33

analogous

#33B2AB #337AB2 #333AB2

triadic

#337AB2 #B2337A #7AB233

tetradic

#337AB2 #AB33B2 #B26B33 #3AB233

square

#337AB2 #AB33B2 #B26B33 #3AB233

split-complementary

#337AB2 #B2333A #B2AB33

monochromatic

#183953 #255982 #337AB2 #5498CE #84B5DC

Accessibility & contrast

On white

4.60

#337AB2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.57

#337AB2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #337AB2

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337AB2	#FFFFFF	#000000	##FFFFFF
##337AB2	1.00	4.60	4.57	4.60
#FFFFFF	4.60	1.00	21.00	1.00
#000000	4.57	21.00	1.00	21.00
##FFFFFF	4.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#617CB4

Deuteranopia (green-blind)

#4F70B1

Tritanopia (blue-blind)

#00888E

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #337ab2;
/* rgb */ color: rgb(51, 122, 178);
/* oklch */ color: oklch(56.1% 0.112 245.6);

Tailwind

colors: {
  custom: {
    50: '#7aa0c9',
    500: '#337ab2',
    950: '#000000',
  },
}

SCSS

$custom: #337ab2;
$custom-light: #7aa0c9;
$custom-dark: #000000;

JSON

{
  "hex": "#337ab2",
  "rgb": {
    "r": 51,
    "g": 122,
    "b": 178
  },
  "hsl": {
    "h": 206.457,
    "s": 55.459,
    "l": 44.902
  },
  "oklch": {
    "l": 0.56076,
    "c": 0.11207,
    "h": 245.6
  },
  "luminance": 0.17837
}

Semantic roles & 50–950 ramp

primary

#337AB2

secondary

#C59C7C

accent

#8B49DF

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #337AB2

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →